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No. 601,809. Patented Apr. 5, 1898.

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No. 601,809. PatentedApr'. 5, 1.898.'

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MACHINE POR WORKING HIDES 0R SKINS. No. 601,809. Patented Apr. 5,1898.

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ALBERT F. JONES, OF SALEM, MASSACHUSETTS, ASSIGNOR TO THE VAUGHN MACHINE COMPANY, OF PORTLAND, MAINE.

MACHINE FOR WORKING HIDES OR SKINS.

SPECIFICATION forming part of Letters Patent No. 601,809, dated April 5, 1898. Application tiled Juno 9, 1897. Serial No. 639,989. (No model.)

In accordance with this present invention the machine is provided with a novel clamping mechanism for the hide or skin which is positively closed and opened by a cam and which is yet so constructed as will enablethe clamping mechanism to adapt itself tohides or skins ofv different thicknesses, as will be described. These and other features of this invention will be pointed out in the claims at the end of this specification.

Figure 1l is a front elevation, with parts.

broken out, of a machine embodying this invention; Fig. 2, a side elevation of the machine shoWn-in Fig. 1, looking toward the right; Fig. 3, a side elevation of the machine shown in Fig. 1, looking toward the left; Fig. 4, a section al detail, on an enlarged scale, to more clearly show the clamping mechanism, the section being taken on the line 7 7, Fig. 1; Fig. 5, a sectional detail similar to Fig. 4, with the parts occupying a dierent position; Figs. 6 and 7, details on an enlarged scale, to be referred to; Fig. 8, a sectional detail, on an enlarged scale, taken on the line l1 l1, Fig.

' 4, the shafts Z217 Z218 being shown in elevation;

Fig. 9, a detail in side elevation and on an enlarged scale, to 'be referred to; Fig. 10, a front elevation of the parts shown in Fig. 9; Fig. ll, a sectional detail on the line 14 14, Fig. 9. l

My present invention is herein shown as embodied in a machine containing features which form the subject-matter of another application, Serial No. 639,397, filed by me June 4, 1897.

The machine herein shown comprises a supporting-frame composed of the side pieces or uprights A AQ connected together by a tie-bar A2 and firmly secured to a suitable foundation A3.

The side frames `A A support a drum-shaft a, to Which is fastened, by radial arms a a2, segments a2 a4 of a drum or cylinder. The segments'a3 a4 constitute rotatable supports for the hides or skins a5 a to be acted upon by an operating roll or cylinder a7, provided 6o with blades or knives a8.

The operating-roll a7 has its shaft 0.9 supported in journal-boxes d10 @12, pivotally supported by screws L12 am in forked or open arms als com of vertically-arranged levers @L17 65 als, pivoted at al d20 to the sides A A of the frame. The pivot-screws L13 am enter suitable sockets in the top and bottom of the boxes alo w12 to permit the operatingroll a7 to move in a substantially horizontal plane., so that it 7o may accommodate itself to the thick and thin portions of the hide. The roll-supporting levers a," als are provided with extensions 10 l2 to which are pivotally connected rods a21 @22, extended through cylinders @L23 @24, at- 75 tached to the side frames, the said rods being screw-threaded at their rear vends to be engaged by nuts c25 @26, against which bear one end of spiral springs C027 @28,Which encircle the rodsxc21 22 and bear against the heads of 8o the cylinders C123 @24. The tension of the springs C027 a2s'is regulated by the nuts 0025 w26 to obtain the desired pressure of the operating-roll on the hide or skin passing under it. The springs Q27 C628 keep the operating-roll in 8 5 engagement with the hide or skin irrespective of the thickness of the said hide or skin, and the normal tendency of the springs is to move the operating-roll forward substantially into contact with the drum or work-support- 9o ing segments, and this forward movement is limited by adjustable stops, screws, or bolts a2@ @31, which extend through the extensions of the levers a als, and engage`stati'onary parts of the machine.

The drum-segments a2 a4 have cooperating with them clamping mechanisms forthe hides or skins a5 a6, which are of novel construction, as will now be described.

Referring to Figs. 4 and 5, the drum-segroo ment a? has secured'to it by bolts b or in other suitable manner a stationary jaw b', with which cooperates a movable jaw Z22, suitably fastened to levers Z22, pivoted on a shaft h4, supported in the radial arm a2 of the segment a4. The lever Z23 is adapted to be moved toward and away from the fixed jaw Z2 by cam plates or disks Z22, attached to the framework of the machine and represented in Figs. 2 and 3 as fastened to the side pieces or uprights A A by bolts Z20. Each cam plate or disk Z25 is provided with a cam-groove Zf, in which travels a roller Z22, (see dotted lines, Figs. 4 and 5, and full lines, Fig. 8,) forming part o f an actuating mechanism for the movable jaw Z22 of the clamp. The actuating mechanism referred to is preferably composed of two members or parts which are yieldingly connected together so as to move as one piece, but which yielding connection enables one of said parts to move independent of the other to permit the movable jaw Z22 to en gage hides or skins of varying thickness, as will be more specifically described. The two members of the actuating mechanism are shown in Figs. 6 and 7 and one of which consists, essentially, of a yoke-shaped casting having two sets of arms Z210 Z212, joined by a tie bar or web Z212, and the other of which is a sleeve or hub Z214, provided with arms Z215 Z210. The sleeve Z211 is mounted on a stu'd or stationary shaft Z211, (see Figs. 4and 8,) projecting from the radial arm a' of the segment a3, and has its arm Z215 extended between and pivotally connected to the forked arms Z212 by a pin Z212, (seeFigs. 4 and 8,) to which the arm Z215 may be fastened by a set-screw Z219. The pin Z218 has mounted on it the cam-roller Z211. The forked arms Z210 have pivotally connected to them one end of an adjustable link Z220, having its other end piVotally-connected to the free end of the .lever Z22 by a pin Z2X, to

which the link Z220 is fastened by a screw Z22X.

The arms Z21G Z213 have interposed'between them a yielding medium shown as a spiral spring Z221, which in the present instance is shown as having one end encircling a boss Z222 on the arm Z210 and at its other end encircling a boss Z223 ona cap or plate Z221, which is engaged by the end of an adjustingescrew Z225, extended through a threaded opening in the arm Z212, and by means of which screw the tension of the spring Z221 may be regulated. The sorer Z225 may be locked in its adj usted position by a nut Z227. The sleeve or hub Z21'1 may be provided also with a lug Z230, which cooperates with a screw Z231, extended through a lug Z222 on one of the arms Z212, for a purpose as will be described.

The drum-segment a4 has cooperating with it a clamping mechanism of like construction and the parts of which are lettered the same as like parts of the clamping mechanism for the segment a2, with the addition of the affix a The operation of the clamping mechanisms may be briefly described as follows:

Referring to Fig. 4, the movable jaw Z22 is shown as closed and the hide or skin a5 is clamped to the segment a2 and is represented as being acted upon by the operating-roll. At the same time the movable jaw Z22 is shown open, and the skin or hide a0, which is shown as clamped to the segment a4 in Fig. 5 and which is supposed to have been acted upon by the roll a7, has dropped or been removed from the segment d4 when the latter has traveled in the direction indicated by the arrow 20, Figs. 4 and 5, from the position shown in Fig. 5 to that shown in Fig. 4. In the rotation of the drum-segments the cam-rollers Z28 Z212 travel in .the cam-groove Z27, which is properly shaped to positively open and close the movable jaws Z22 Z22, and in the present instance the portion of the cam-groove from the point 30 in Figs. 4 and 5 to the point 3l maybe supposed to open the movable jaws, and the portion of the cam-groove from the point 3l to about the point 32 being on a true circle serves to hold the movable jaws open, while the portion of the cam-groove from the point 32 to the point 33 effects a gradual closing of the movable jaws, and the portion of the cam-groove from the point to the point 30 being on a true circle serves to maintain the movable jaws closed.

In Fig. 4 the cam-roller Z28 is traveling in the portion of the groove from the point 33 to the point 30 and the jaw Z22 is closed7 and the hide or skin a5 is yieldingly clamped between the jaw Z22 and the jaw Z2/ by the spring Z221, for by inspection of Fig. 4 it will be seen that by reason of the cam-roller Z28 being in a true circular portion of the cam-groove Z2ri the sleeve Z214 is held from turning, but that the forked part of the clam p-actuatin g mechanism, comprising the arms Z210 Z212, is free to turn on the pin Z21S against the actionof the spring Z221 when the movable jaw Z22 engages the hide or skin a and presses it against the Xed jaw.

In Fig. 4 the cam-roller Z281 is shown at or about the point 31, and it will be seen that as the cam-roller Z22 travels from the point 30 inward toward the center of the drum the sleeve Z211 and its arm Z215 are'no longer locked from turning, and consequently the spring Z221 being relieved from compression as soon as the roller Z22 passes by the point 30 eX pands and forces the arms Z210 Z212 apart until the screw Z231 and lug Z220 are brought into engagement, as shown in Fig. 4, and when in this position the two parts of the clamp-actuating mechanism travel in the cam-groove as one piece until the cam-roller Z22 reaches the point 33 of the large circular path or portion of the cam.` 'As the cam-roller Z22 travels in the portiony of the cam-groove Z27 from the point 32-to the point'33 (see Fig. 5) the sleeve Z211 is turned on its pivot in the direction indicated by the arrow` 100, which movement is transmitted by the arm Z210 and spring Z221 to the arm Z212, and as a result the screw Z221 is maintainedl in engagement with the lug Z220, and consequently the actuating mechanism as one piece is turned on the stud IOO IIO

or pivot 51111, thereby gradually straighten-ing the link h2o and bringing it into substantiallya straight line with the pivot Z911 when the cam-roller bs has reached the limit of its outward movement-namely, the point 33. When, however, the roller bs reaches the limit of its outward movement and passes into the outer circular path, the union or connection of the two parts of the cam-actuating mechanism may be broken by the hide or skin between the jaws b2 b'aM compressing the spring 6211, and the movable jaw b2@ is thus permitted to accommodate itself to hides or skins of different thickness. The action of the cam-groove b1 upon the actuating mechanism for the jaw b2 is the same as just described 'with relation to the jaw b21, and in Fig. 4 the cam-roller bs is shown in the outer circular portion of the cam and as having just passed the point 33. By reference to Fig. 1 it will be seen that the hide a5 is clamped between the jaws h2 b' and that the jaw b2 is held in engagement with the hide by the spring b21. The jaw b2 is held closed until' the cam-roller 68 passes the point 430 of the cam-groove, and when the said cam-roller reaches the point 30 the drum-segment will have advanced sufficiently to carry the hide a5 past or beyond the operating-roll. After the cam-roller bs passes the point 30 in the cam-groove the jaw b2 is opened as the roller bs travels from the point 30 to the point 31, thus permitting the ready removal of the skinor hide, the said jaw at such time being in the position occupied by the jaw b2 in Fig. 4. The jaw b2 remains wide open while the roller 198 travels on the circle from the point 31 to the point 32, and at such time the drum-.segment as will have advanced into the position occupied by the segment a1 in Fig. 5 ready to receive the hide or skin, which may be placed within the drum between the jaws?)2 b by hand or by an automaticfeed mechanism, as described in the application above referred to, and which consists of a feed-bar c, extended substantially the length of the drumsegments and secured to cranks or arms c c2 on rock-shafts c3 c4, having bearings in boxes c5 c6, (see Fig. 1,) and provided at their opposite ends with cranks o1 cs, to which are joined links or bars ci c1", the link cf being pivoted to the side frame A and the link C10 being connected to an arm c1? on a rock-shaft 013, having bearingsin the side frame A and provided with a crank or arm C14, adapted to be engaged by cranks or arms 015.016 on the drumshaft a and shown in Fig. 2 as made in one piece. The feed-bar chas cooperating with it a push-bar 020, attached .to levers 021 022, pivoted to the cranks c c2 and having arms o23 C21, which are adapted to engage studs or pins c25 on the side frames A A', which studs turn the levers 011 022 on their pivots and move the push-bar C20 forward over the upper surface of the feed-bar c and thereby push the hide or skin into the drum, as represented in Fig. 5. The'feed-bar c is moved forward twice during each revolution of the shaft ct by the cranks or arms V015 o16 engaging` the crank or arm C11 and moving it in the direction indicated by arrow L10, Fig. 2.

In leather-workingmachines employing an operating-roll having blades it is desirable to keep the said blades in good operative condition, which may be accomplished bya grind-1y ing or sharpening mechanism, such as represented in Figs. 1, 2, and 3, and which consists of a brick d', of emery, secured, as by a screw d2, in a holder d, vertically adjustable by a screw d1 on a carrier d3, movable on a bar d1 and provided at its ends with arms e' e2, pivj oted, as at e3 e4, to lugs e5 eG on the roll-supportingleversa11a18. (See Fig. 9.) The cover or hoode is adapted to be turned down on the pivots eS e4, so as to permit of access to the operating-roll, and the said cover is locked in its raised or normal position by locking devices (shown as pins or rods e1@ 612) pivoted to move in a horizontal plane on lugs e111 914, attached to the levers L11 e118. (See Figs. 2, 3, 9,10, and 11.) -The rods or pins e111 @12 are adapted to enter slots eX in the side ofthe arms e e2, (see Figs. 9, 10, and 11,) and are yprovided with screw-heads or thumb-nuts 615 e111 to engage one face of the arms and with lock-nuts e11 e111 to engage the other face of said arms. i By unscrewlng the thumb-nuts @15 @16 the rods @10 612 may be turned out of the slots eX. in the cover andthe latter may be turned down, so as to uncover the roll a1.

The drum-shaft a may be rotated in any suitable manner, and in the present instance the said shaft has fast on it a gear j', in mesh with a pinion f on a shaft f2, having mounted on it`a gearff, which meshes with a pinion f4 on a main shaft f5, provided with a fast `pulley f 6, which may be belted to a counter-shaft. (Not herein shown.) The operating-roll a1 may b'e driven in anysuitable manner, and as herein -representedthe said roll has fast on its shaft a pulley f8, and, preferably, also a fly-wheel f1. The pulley f8 may be belted to the counter-shaft. (Not herein shown, but to which the pulley f1 is connected.)

I claiml v 1. In a machine for working hides and skins, the combination of the following instrumentalities, viz: a rotatable work-support, a`

IOO

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clamping mechanism movable with said workp support and provided with a movable jaw pivoted within the said work-support off the center thereof and movable toward the 'center of said work-support in the act of openism and is constructed to open the jaw, to hold the same open to permit the hide to be placed in position, to gradually close said jaw on the hide, and to hold the jaw closed while the hide is being acted upon, substantially as described.

2. In a machine for working hides or skins, `the combination of the following instrumentalities, viz: a rotatable work support, a clamping mechanism cooperating therewith and provided with a movable jaw, a cam provided with a cam-groove, and an actuating mechanism for said movable jaw engaging said cam-groove and comprising two looselyconnected members having a yielding medium interposed between them, and means to limit the movement of said members by said yielding medium, substantially as described.

3. In a machine for working hides or skins, the combination of the following instrumentalities, viz: a rotatable work support, a clamping mechanism cooperating therewith and provided with a movable jaw, a cam provided with a cam-groove, and an actuating mechanism for said movable jaw engaging said cam-groove and comprising two looselyconnected members, a spring interposed between said members, means to adj ust the tension of said spring, and means to limit the movement of said members by said spring, substantially as described.

4:. In a machine for workin g hides or skins, the combination of the following instrumentalities, viz: a rotatable segmental drum, a clamping mechanism cooperating therewith and provided with a movable jaw pivoted at one end within said drum and having its free end movable toward the center of the drum in the act of opening, an actuating mechanism positively connected to the free end of said jaw, and a cam having a cam-groove engaged by said actuating mechanism to positively move said jaw in opposite directions and thereby positively close and open said jaw, substantially as described.`

5. In a machine for working hides or skins, the combination of the following instrumentalities, viz: a rotatable work support, a clamping mechanism cooperating therewith and provided with amovable jaw, an actuating mechanism positively connected to said jaw and consisting of loosely-connected members having a yielding medium between them, means to limit the movement of said members by said yielding medium, and a cam positively engaged by said actuating mechanism to positively close and open the said movable jaw, substantially as described.

6. In a machine for working hides or skins, the combination of the followinginstrumentalities, viz: a segmental drum, a clamping mechanism cooperating therewith and comprisinga stationary jaw, a movable jaw pivoted within said drum at one side of its center to move toward the center of the drum in the act of open ing, a cam provided with a camgroove, and an actuating mechanism for said movable jaw comprising two members loosely connected together and one of which is connected to the free end of the movable jaw, and a yielding medium between said members, substantially as described.

7. In a machine for working hides or skins, the combination of the following instrumentalities, viz: a movable work-support, an operating-roll cooperating therewith, supporting-levers for said roll, a hood or cover for said :roll pivoted to said levers, and means to lock said cover in its operative. position, substantially as described.

8. In a machine for working hides or skins, the combination of the following instrumentalities, viz: a rotatable work support, a clamping mechanism cooperating therewith and provided with a movable jaw pivoted at one end within said work-support off the center thereof and having its free end movable toward the center of the work-support in the act of opening, a stationary cam provided with a cam-groove, and an actuating mechanism for said movable jaw positively connected to the free end of said jaw and engaging said cam to be actuated thereby to positively and pivotally open and close said movable jaw, substantially as described.

9. In a machine for working hides or skins, the combination of the following instrumentalities, viz: a rotatable Work support, a clamping mechanism cooperating therewith and provided with a movable jaw, an actuating mechanism connected to said jaw and comprising two members pivotally connected together and provided with arms, a yielding medium interposed between said arms, means on said members to limit their movement by said yielding medium, and a cam positively engaged by said actuating mechanism to positively close and open said movable jaw, substantially as described.

In testimony whereof I have signed my name to this speciiication in the presence of two subscribing witnesses.

ALBERT F. JONES..

lVitnesses:

J As. II. CHURCHILL, J. MURPHY.

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